ナイロビ 4月の天気
ナイロビの4月:暖かい、雨が多い、蒸し暑い — 雨の日22日が気にならなければ悪くない時期。
2026年9月更新 · ERA5再解析による気候平年値
ナイロビでは12か月中12位 · 4月に訪れたい旅行先で1413か所中515位 · 快適スコア82/100(Aランク)
- 日中
- 26°C
- 夜
- 16°C
- 雨の日
- 22
- 日照
- 10.1 h
- 湿度
- 75%
- 日の長さ
- 12 h

ナイロビの4月のようす
The wettest month of the year. Roads flood, everything greens and the parks are quiet and hard going underfoot.
monsoonlow season
確度:high
4月のナイロビについての旅行者の声
ナイロビのほかの月
Regulars are specific that November's short rains typically start easing by mid-month, this stretch marking a genuine turn toward plenty of sunshine without yet tipping into properly hot - regulars call this among the more enjoyable months for exactly that combination. Our row backs that warm, still-showery read, 26C over 15.7C nights, with 47.8mm of rain across 8 days and humidity at 71 percent. Regulars are consistent this counts as traditionally the start of the region's warmer stretch, evenings still cool enough at this elevation for a light layer even as days turn pleasant. A rain jacket remains worth packing for the tail end of the short rains rather than relied upon as a given. The record: 10.8 hours of sun, a 17 kph wind and AQI 47.
Regulars call July part of Kenya's winter and its best travel season at once - dry, cooler than the rest of the year, and the more expensive stretch for exactly that reason. The catch they name every time is the morning: mild warm days give way to properly cold nights and dawns, overcast and damp more often than not, needing a real jacket or fleece rather than a light layer. Our row backs both halves, 23.3C reading as 23C over 12.9C nights, with rain almost gone at 16mm across 4 days. This is also safari season at altitude rather than at the coast, so the chill belongs to Nairobi and the highlands rather than to Kenya as a whole. The record: humidity 67 percent, 8.3 hours of sun, a 10.7 kph wind and AQI 71.
Regulars keep correcting the same assumption: this city is cooler and drier-feeling than the rest of Kenya because it sits high, so June here is not an equatorial month. They give low to mid 70s by day, cool mornings and evenings, and days that can stay at 16 to 18C - our row reads 23.7C over 13.6C at 70 percent humidity. June also runs towards July and August, the coldest part of the year. Their packing list is a spring one: a light rain jacket, a fold-up umbrella and a fleece for the evening. Rain is modest at 35.2mm across 6.8 days. The figure worth knowing is the air, at AQI 81. The record: 9.8 hours of sun and an 11 kph wind.
September sits inside Kenya's dry season, with little and possibly no rain before the short rains arrive in late October - our row gives 25.9mm across 4.7 days at 63 percent humidity. Regulars describe mid-September to mid-October as dry and warming, with Nairobi's own weather picking up through the month, and one benefit they mention unprompted: the mosquitoes are largely out of season. The standing warning is about the ends of the day rather than the middle - early morning and sunset game drives get genuinely cold in an open vehicle, which our row's 13.9C night under a 26.3C day explains. Layers, always. The record: 10 hours of sun, a 13.8 kph wind and AQI 53.
通年のメモはナイロビの概要ページにあります。 地図のナイロビのカードから自分のメモを追加できます。
ナイロビの気候平年値 — 4月
ERA5再解析による月平均値です。AQIはその月の平均US AQI(米国大気質指数)です。
4月のナイロビの混雑
その場所自体の混み具合 — 学校休暇や大型連休、編集部がタグ付けした月、そして天気の良さによる人気の高さ。快適スコアには含まれません。
閑散編集部が選ぶ閑散月、Easter travel week、主な訪問国のうち4か国で学校休暇
ピークの混雑混雑ショルダーシーズン閑散
ナイロビの天気が良い月
この旅行先自身の一年間の快適スコアでランキングしています — 混み具合とは別のものです(上の「混雑」を参照)。
天気はまずまずナイロビの天気は一年を通じて大きく変わりません — どの月も快適さはほぼ一定です。
4月のナイロビのイベント
毎年の季節のイベント、自然の見どころ、休業、祝日 — 厳選し出典を明記しています。
- 季節
The long rains
3月15日〜5月31日 · 例年モンスーンリスクThe heavier of the two wet seasons, arriving as afternoon storms and settling in through April. Roads flood, everything greens, and the safari camps drop their rates or close.
- 祝日
Easter travel week
3月20日〜4月25日 · 例年イースター・聖週間混雑休業Good Friday and Easter Monday are both public holidays and Nairobi empties towards the coast and the up-country homes. Flights to Mombasa and Diani go first; the city itself is easy that week. 出典 ↗
- 自然
Migrant bird season
11月1日〜4月15日 · 例年野鳥シーズンPalearctic migrants arrive with the short rains and stay into April, which is when the national park, the Athi plains and the Rift lakes an hour away hold the most species. The residents are there all year. 出典 ↗
近くで開催中のイベント
ナイロビから300 km以内 — 日帰りやちょっとした移動で行けて、今月何かがある場所です。快適スコアには含まれません。
ナイロビはどこにある?
4月のナイロビ — よくある質問
- 4月はナイロビを訪れるのに良い時期ですか?
- ナイロビの4月:暖かい、雨が多い、蒸し暑い — 雨の日22日が気にならなければ悪くない時期。SeasonMapの快適スコアでは、ナイロビの12か月中12位です(82/100)。
- 4月のナイロビはどんな天気ですか?
- 4月のナイロビは、平均最高気温26°C、最低気温16.2°C、降水量は約139.1 mmで、雨の日はおよそ21.8日です。
- 4月のナイロビの大気質はどうですか?
- 4月のナイロビの米国大気質指数(US AQI)は、平均約59です。
300 km圏内:SerengetiのMigrant birding season(11月15日〜4月15日ごろ)、AmboseliのThe long rains(3月15日〜5月20日ごろ)。